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KMID : 0361120190330040065
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Korean Journal of Transplantation
2019 Volume.33 No. 4 p.65 ~ p.73
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Conceptual changes in small-for-size graft and small-for-size syndrome in living donor liver transplantation
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Ikegami Toru
Kim Jong-Man
Jung Dong-Hwan
Soejima Yuji
Kim Dong-Sik
Joh Jae-Won
Lee Sung-Gyu
Yoshizumi Tomoharu
Mori Masaki
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Abstract
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Early series in living donor liver transplantation (LDLT) in adults demonstrated a lower safe limit of graft volume standard liver volume ratio 25%?45%. A subsequent worldwide large LDLT series proposed a 0.8 graft recipient weight ratio (GRWR) to define small-for-size graft (SFSG) in adult LDLT. Thereafter, researchers identified innate and inevitable factors including changes in liver volume during imaging studies and graft shrinkage due to perfusion solution. Although the definition of small-for-size syndrome (SFSS) advocated in the 2000s was mainly based on prolonged cholestasis and ascites output, the term SFSS was inadequate to describe clinical manifestations possibly caused by multiple factors. Thus, the term “early allograft dysfunction (EAD),” characterized by total bilirubin >10 mg/dL or coagulopathy with international normalized ratio >1.6 on day 7, has become prevalent to describe graft dysfunction including SFSS after LDLT. Although various efforts have been made to overcome EAD in LDLT, graft selection to maintain an expected GRWR >0.8 and full venous drainage, as well as inflow modulation using splenic artery ligation, have become standard in recent LDLT.
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KEYWORD
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Living donor liver transplantation, Small-for-size graft, Small-for-size-syndrome, Early allograft dysfunction
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